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bertjan@openvalue.eu
With Quarkus, GraalVM native images and AWS Lambda
Bert Jan Schrijver
Going serverless
@bjschrijver
Bert Jan Schrijver
L e t ’ s m e e t
@bjschrijver
About the NLJUG
The NLJUG events app
NLJUG app: look & feel
NLJUG app: architecture
AWS S3
Bucket
App backend
Internet
Votes
Content
NLJUG app voting backend
App backend: first iteration (2015)
AWS EC2
AWS ELB
Wildfly 8
Java 7
Java EE
Application
AWS EC2
MySQL 5
11
• Functions-as-a-service (FaaS)
• Short running
• Small units of execution
• On demand, pay per use, scale to zero
• Startup time matters (for cold starts)
• There are still servers ;-)
Serverless computing
Background source: https://filmquarterly.org/2012/07/02/i-robot-what-do-robots-dream-of/
My first serverless experience (2016)
App backend: second iteration (2018)
AWS EC2
AWS ELB
Spring Boot 2
Java 8
Spring
Application
AWS
DynamoDB
15
First serverless attempt (2019)
• JDK & JVM
• Built by Oracle
• Two runtime options:
• run as JVM (Based on Hotspot) with JIT
• ahead-of-time compilation to platform-
specific native image binary
GraalVM
In the meantime…
• Kubernetes native web framework
• Open source, developed by Red Hat
• Designed to work with Java ecosystem
• Tailored for OpenJDK HotSpot and
GraalVM
• Great developer experience
Quarkus
Second serverless attempt (2022)
Third serverless attempt (2023)
Third serverless attempt (2023)
J-Spring 2024 - Going serverless with Quarkus, GraalVM native images and AWS Lambda
App backend: third iteration (2023)
AWS Lambda
AWS
API Gateway GraalVM
native image
Java 17
Quarkus
application
AWS
DynamoDB
Demo time!
Migrating from Spring to Quarkus
Migration: REST endpoints
Migration: REST entity classes
Migration: Other changes
Show me the code!
Experiences from running in production
Photo: Dave Lehl
Monitoring, performance & scalability
Metrics during J-Fall 2023
Number of invocations per minute
Request duration (1 min avg)
Request duration (1 hour avg)
Success / error count
Concurrent executions
Logs
Costs
AWS costs for J-Fall 2023 app backend
AWS costs for J-Fall 2023 app backend
Is this the holy grail / graal?
• Cross compiling across cpu architectures is slow
• 3rd party library support for native images is not
guaranteed (but Quarkus libs are good)
• Reflection and native images can be tricky
• Debugging can be painful if problem is not local
• You need limits on lambda and API GW
• Probably good to use build & deploy pipelines ;-)
Quarkus/GraalVM native/Lambda caveats
Let’s wrap up!
• Serverless Java is totally doable in 2024!
• Quarkus & GraalVM ❤ serverless
• Ideal for small/hobby projects
• As usual, YMMV ;-)
• Demo/seed project:
https://github.com/bertjan, repo:
quarkus-graalvm-aws-lambda-arm64
Summary
Source: https://cdn2.vox-cdn.com/thumbor/J9OqPYS7FgI9fjGhnF7AFh8foVY=/148x0:1768x1080/1280x854/cdn0.vox-cdn.com/uploads/chorus_image/image/46147742/cute-success-kid-1920x1080.0.0.jpg
THAT’S IT.
NOW GO KICK SOME ASS!
Questions?
@bjschrijver
Thanks for your time.
Got feedback? Tweet it!
All pictures belong
to their respective
authors
@bjschrijver

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J-Spring 2024 - Going serverless with Quarkus, GraalVM native images and AWS Lambda